Bryant 551J Install External Condensate Trap and Line, Make Electrical Connections

Page 11

Step 9 — Install External Condensate Trap and Line

The unit has one 3/4-in. condensate drain connection on the end of the condensate pan and an alternate connection on the bottom. See Fig. 13. Unit airflow configuration does not determine which drain connection to use. Either drain connection can be used with vertical or horizontal applications.

CONDENSATE PAN (SIDE VIEW)

 

ALTERNATE

STANDARD

DRAIN PLUG

BOTTOM DRAIN

SIDE DRAIN

(FACTORY-INSTALLED)

 

 

C08021

Fig. 13 - Condensate Drain Pan (Side View)

When using the standard side drain connection, ensure the red plug in the alternate bottom connection is tight. Do this before setting the unit in place. The red drain pan plug can be tightened with a 1/2-in. square socket drive extension.

To use the alternate bottom drain connection, remove the red drain plug from the bottom connection (use a 1/2-in. square socket drive extension) and install it in the side drain connection.

The piping for the condensate drain and external trap can be completed after the unit is in place. See Fig. 14.

Step 10 — Make Electrical Connections

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Do not use gas piping as an electrical ground. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code); ANSI/NFPA 70, latest edition (in Canada, Canadian Electrical Code CSA [Canadian Standards Association] C22.1), and local electrical codes.

NOTE: Check all factory and field electrical connections for tightness. Field-supplied wiring shall conform with the limitations of 63_F (33_C) rise.

Field Power Supply —

If equipped with optional Powered Convenience Outlet: The power source leads to the convenience outlet’s transformer primary are not factory connected. Installer must connect these leads according to required operation of the convenience outlet. If an always-energized convenience outlet operation is desired, connect the source leads to the line side of the unit-mounted disconnect. (Check with local codes to ensure this method is acceptable in your area.) If a de-energize via unit disconnect switch operation of the convenience outlet is desired, connect the source leads to the load side of the

551J

j

MINIMUM PITCH

1” (25mm) PER

10’ (3m) OF LINE

TO ROOF

DRAIN

BASE RAIL

2˝ (51) MIN

OPEN

VENT

SEE NOTE

ROOF

CURB

DRAIN PLUG

unit disconnect. On a unit without a unit-mounted disconnect, connect the source leads to compressor contactor C and indoor fan contactor IFC pressure lugs with unit field power leads.

Refer to Fig. 19 for power transformer connections and the discussion on connecting the convenience outlet on page 12.

Field power wires are connected to the unit at line-side pressure lugs on compressor contactor C and indoor fan contactor IFC (see wiring diagram label for control box

NOTE: Trap should be deep enough to offset maximum unit static difference. A 4” (102) trap is recommended.

C08022

Fig. 14 - Condensate Drain Piping Details

All units must have an external trap for condensate drainage. Install a trap at least 4-in. (102 mm) deep and protect against freeze-up. If drain line is installed downstream from the external trap, pitch the line away from the unit at 1-in. per 10 ft (25 mm in 3 m) of run. Do not use a pipe size smaller than the unit connection (3/4-in.).

component arrangement) or at factory-installed option non-fused disconnect switch. Max wire size is #2 AWG (copper only). (See Fig. 15.)

NOTE: TEST LEADS - Unit may be equipped with short leads (pigtails) on the field line connection points on contactor C or optional disconnect switch. These leads are for factory run-test purposes only; remove and discard before connecting field power wires to unit connection points. Make field power connections directly to line connection pressure lugs only.

11

Image 11
Contents Installation Instructions 551J Unit Dimensional Drawing C10058 Plan for Unit Location Plan for Sequence of Unit InstallationCurb-mounted installation Operating WeightsProvide Unit Support Inspect unitRoof Curb Details Rig and Place Unit Field Fabricate DuctworkPositioning on Curb Convert to Horizontal and Connect Ductwork when requiredInstall Outside Air Hood Indoor Coil Access Panel Relocation Make Electrical Connections Install External Condensate Trap and LineField Power Supply Convenience Outlets All unitsConvenience Outlet Location Installing Weatherproof Cover Thermostat Field Control WiringFactory-Option Thru-Base Connections Units without Thru-Base ConnectionsHeater Model Number Heat Anticipator SettingsElectric Heaters Typical Component Location Smoke Detectors SystemController Typical Supply Air Smoke Detector Sensor Location Smoke Detector LocationsReturn Air Detector Shipping Position Completing Installation of Return Air Smoke SensorRTU-MP Multi-Protocol Control Board RTU-MP control systemRTU-MP System Control Wiring Diagram Type of I/O Connection PIN Name Numbers Inputs RTU-MP Controller Inputs and Outputs55 Space Temperature Sensor Wiring Space Temperature SPT SensorsRTU-MP T-56 Sensor Connections SEN Filter Status Connecting Discrete InputsPower Exhaust output Communication Wiring Protocols GeneralRTU-MP Troubleshooting Communication LEDs Local AccessLEDs on the RTU-MP show the status of certain functions LEDsFLA LRA Unit Wire/Fuse or Hacr Breaker Sizing DataPwrd C.O 27.8 132 42.0 47/47 EconoMi$er IV Occupancy Switch Adjust Factory-Installed OptionsPre-Start and Start-Up Install Accessories